Automatic roll-changer for musical instruments.



F. L. MCCORMICK. AUTOMATIC ROLL CHANGER FOR MUSICAL- INSTRUMENTS.

APPLIGATION FILED 8319121, 1912. 1,1 10,001 Patented Sept. 8, 1914.

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APPLIOATION FILED SEPT. 21, 1912.

Patented Sept. 8, 1914:.

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F. L. MGCORMIGK. AUTOMATIC ROLL CHANGER FOR MUSICAL INSTRUMENTS.

APPLICATION FILED SEPT. 21, 1912.

Patented Sept. 8, 1914.

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F. L. MuCORMIGK. AUTOMATIC ROLL CHANGER Poe MUSICAL INSTRUMENTS.

APPLIGATION FILED SEPT. 21, 1912.

Patented Sept; 8,1914.

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Wifmafisaafi F. L; MCCORMICK. AUTOMATIC ROLL GHANG'ER FOR MUSICAL INSTRUMENTS.

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AUTOMATIC ROLL CHANGER FOR MUSICAL INSTRUMENTS. APPLIGATIONIILED SEPT.21,1912.

Patented Sept. 8, 191% 6 SHEETS-SHEET 6.

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FRANK L. MGCORMICK, OF NOB-TH TONAVJANDA, NEW YORK, ASSIGNOR TO THE RU- DOLPH WURLITZER MANUFACTURING COMPANY, YORK, A CORPORATION OF NEW YORK.

OF NORTH TONAWANDA, NEW

AUTOMATIC ROLL-CHANGCERv FOR MUSICAL INSTRUMENTS.

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Specification of Letters Patent.

Patented Sept. 8, 129 14;.

Application filed September 21, 1912. Serial No. 721,586.

T all vol/om it may concern Be it known that I, Fna'xic L. McCon- MICK, a citizen of the United States, rcs1ding at North Tonawanda, 1n the county of Niagara and State of New York, have mvented new and useful Improvements in Automatic Roll-Changers f( r Musical instruments,.of which the following is a specificat'on.

This invention relates to the music roll magazines or carriers used in connection with automatic musical instruments and adapted to carry a series of music rolls, to enable the instrument to play a comparatively large number of selections without changing the rolls by hand, as isthc case in ordinary instruments controlled by such sheets.

The present invention relates more par ticularly to improvements in the automatic roll changer or carrier shown and described in Letters Patent of the United States No. 769,671, granted September G, 190 1, to W. Verstraelen and C. Alter. The device of. this patent comprises essentially a rotary horizontal carrier adapted to contain a plurality of music rolls, a single take-up roll common to the several music rolls, transfer or car v ing arms for delivering the free end of each music sheet to the take-up roll, driving mechanism for unwinding and rewinding the music sheets and mechanism for advancing the carrier a step after playing and rewinding each roll to bring another roll into playing position. in the patent above referred to, these movements are produced largely by pneumatic means.

()ne of the objects of my invention is the prcduction of a rollchanger of this character in which the various movements are produced principally by mechanical means, with a view of rendering the apparatus more reliable in action.

A further object is to simplify the construction of such devices and reduce their cost.

in the accompanying drawings consisting of (3 sheets: Figure 1 is a front elevation of the device. Fig. 2 is a sectional end view thereof, on an enlarged scale the plane of the sectional portion being on line 22, Fig. 1. Fig. 3 is a side elevation of parts of the actuating mechanism of the roll carrier, showing the same in a different position from that illustrated in Fig. 2. Figs. 4 and 5 are transverse sections on lines i-5, Fig. 1 showing the parts in different positions. Fig. 6 is a transverse section on line 6(3, Fig. 1, showing the roll driving mechanism. Fig. 7 is an end elevation of the apparatus viewed from the end at which the main driving mechanism is 10 atcd. Figs. 8, 9 and 10 are perspective views, showing different positions of the roll-driving mechanism and its locking means. Fig. 11 is aperspectivc view of the flushing valve and cooperating parts. Fig. 12 is an elevation of the inner side of the actuating wheel of the roll carrier and adjacent parts. Fig. 13 is a fragmentary transverse section of the apparatus showing the position of the transfer arms preparatory to being elevated by the rod of the music sheet.

Similar characters of reference indicate corresponding parts throughout the several views.

The stationary main frame of the apparatus may be of any suitable construction, that shown in the drawings comprising a pair of upright endpieces or plates 1 connected near their upper and lower portions by horizontal tie rods Q.

Mounted horizontallv in the upper portion of this frame is the rotary roll carrier or magazine which in the preferred construction shown consists of a horizontal shaft journalcd in suitable hearings in thc end-pieces 1 and carrying a pair of spaced heads 4 fixed thereon and between which the music rolls 5 are supported in a circular series. ()ne of these heads, preferably the left hand one, carries the usual yicldablc bearing studs 6 which receive the adjacent journals of the music rolls, while theothcr head carries the customary rotary sockets T which receive the usual wingcdjournals of the rolls. in the construction shown in the drawings. each of these sockets is carried by a shortshaft 8 journalcd in said head and providcd at its outer end with a clutch incinher 9 and preferably also a roovcd pulley 10 embraced by a flexible bra l te band 11 for checking rotation of the music roll to insure proper unwinding and winding of the music sheet.

At one end of its shaft the roll carrier is provided with a hand wheel 12 by which it may be manually set to play any desired music roll. For this purpose the shaft is.

provided adjacent to the hand wheel with a pointer 13 which traverses a fixed dial 1% hearing numloersor other suitable indica 21 and 21 as siown in The sh 2) i7 is gournaied its upper and lower cis inh-racltets 22, a3 pro ecting from the scent end-piece l,

and has splined thereon a friction wheel 24; which engages an uprigi iriction. disk 25 secured to a shaft 26 journaled in a hearing mounted on said end-piece. Carried by the latter and arranged below said friction disk is a longitudinal arbor 27 upon which is rotatahly mounted a sprocket wheel 28 driven by a chain 29 from a sprocket wheel 30 on the hub of said disk. Secured to the hub of the lower sprocket wheel 28 is a spur pinion 31 which meshes with a spur wheel 32 secured to the adjacent end of a longitudinal shaft 33 journaled in the lower portion of the end-pieces 1, by which construction the last-named shaft is constantly driven from the main shaft. To enable the speed of the driven parts to he changed or adjusted as required, the friction wiieel 2a is movable toward and from the axis or" the friction dish 25. For this purpose the huh of? the friction wheel is, annularly grooved to receive the pins of a vertically-swinging foil; 34 fixed to a rock shaft 35 carried by the bracket 22:. Thisrock shaft has an arm 36 which is engaged by the lower end of an adjusting screw 37 threaded in the bracket 22'. Upon turning this screw in one or the other direction the friction wheel is moved toward or from the axis of the friction disk, correspondingly increasing ordiminishing the speed of the latter and the parts connected therewith.

Fixed upon the left hand end of the roll carrier shaft is a wheelSS provided with radial slots 39 extending inwardly from its edi s and corresponding in number and position tothe hearing studs 6 andsoclre s 7 of the roll carrier. These slots are successively engaged by a pin l0 carried by an actuating wheel 41 having sprocket teeth and mounted on a stud projecting from the adjacentend piece 1, said pin entering. and leaving one of said s ots during each complete rotation of sail sprocket wheel and thereby turning the roll carrier forward one step or the distance from one music roll to the next. Said sprocket wheel is intermittently driven from the constantly rotating shaft 33 by a chain 4-2 passing around the same and around a sprocket pinion 4&3 loosely sleeved on'said shaft. The pinion 43 has clutch pins or members it adapted to be engaged by a cooperating clutch member to splined upon the shaft 58 and connected with the forked lower end of a clutch-lever Figs. 1 2. his clutchlever is pivotedto a bracket 47 proiecting nthe end-piece l.

i s lower is constantly drawn hy. a

said clutch men is. The clutch lever is swung in the o csite d rection todiseneragc said clutchar cars by means of thrust bar or lint: hearing th its forlted or slotted lower end the upper said lever pivoted at its upper end to the lower a of a controlling lever to pivoted to the adjacent end-piece 1. The upper arm of his lever. is provided with a nose 51 which normally rides upon an annular flange 593 of the sprocket or actuating wheel ll and which is adapted to enter a notch 53 in said flange once during every rotation of said wheel. The upper end of the lever is pressed against said notched flange by a suitable spring 5%., pref rably a leaf SPIIHG secured to the face thereof and acted on by a cam or projection 55 secured to a longitudinal rock shaft 56 journaledin the end pieces 1 underneath the rollcarrier. A' spring 57 which connects the upper arm of the lever 50 with the adjacent end piece 1 tends to withdraw the nose or said lever from the notch 53 of the sprocket-wheel flange 52. When the shaft 56 is rocked downwardly, the cam 55 tensions the leaf-spring 5% which thereby overcomes the resistance of the spring 57 and presses the upper end of the lever 50 against said sprocket-wheel flange. When during the rotation of said sprocket wheel said notch comes into register with the nose of the lever 50, the nose enters the notch, under the pressure of the spring" 54 swinging the lower arm of said lever downward and causing the thrust har L9 to rock the clutch lever {to in the proper direction to disengage the clutch members at as and stop the rotation of the sprocket wheel ll and the roll carrier. V i hen the shaft 56 is rocked hackwardly, the cam 55 is withdrawn from said leaf-spring, relaxing the latter and allowing the other spring 57 to with draw thecontrolling; lever 50 from the notch oi the sprocket wheel il as shown in Fig. 2. By this action the slotted lower end of the thrust bar is drawn -upwardly away from the upper arm of the clutch lever 46, releasing the latter and allowing its spring 4&8 to swing its lower arni inwardly, thereby 4:8 in the proper direction to cottageagain throwing the-clutch members-into engagement, preparatory to turning the roll carrier another step.

After each forward step or. partial rotation, the roll carrier is positively held from turning by a retaining lever 58 prefby a spring 62 The notches 60 of saidwheel are preferably ii-shaped or of camform, as shown, so that. as the roller of the lever moves into the notches it partially turns the roll carrier until the roller becomes fully seated in the notch when it arrests the rotation of the carrier ,The'lever 58 is positively locked in position to prevent rotation of the roll carrier by a vertically-swinging lock or latch 63 mounted on a pivot Gicarried by the adjacent end-piece l and adapted to be swung upward in front of the lower arm of saidlever, (as shown in Fig. 5) by a spring 65 connected with the latch. The upward movement of this latch is limited by a stop pin 65* projecting inwardly from said end-piece.

66 indicates the take-up roller arranged horizontally underneath the front portion of the roll. carrier'and 67 is. the tracker board arrangedbetween the take-up roll and the roll carrier and over which the sheet of the active music rolltravels when the take-up roller is driven in the proper direction-to unwind the sheet from said roll. F or this purpose each music roll is provided at its free end with a transverse rod 68 projecting beyond the edges thereof and adapted to be engaged by hooks 69 carried by the end flanges of the take-up roll, substantially as shown and described in the Letters Patent hereinbefore referred to. In the normal wound-up condition of the music rolls these rods are yieldingly confined in radial notches 70 in the heads of the roll carrier by suitable spring catches 71 which prevent accidentalescape of the rods from the notches.

As in the aforesaid Letters Patent, the end rod 68 of the music roll. to beplayed is carried or transferred from the notches in the roll-carrier heads to the hooks of the take-up rollrby a pair of vertically-swingin arms 72 arranged on the outer sides of sai heads and secured to the rock shaft 56. These transfer arms are provided on their undersides near their free ends with seats or notches 73 which receive the rods of the music rolls and with beveled noses 74- which engage behind the rods and direct them into said notches when the roll carrier is turned forward a step to bring a music roll into playing position. These arms are yieldingly held in their elevated position by'a lever 75 pivoted to the inner side of one of the end pieces 1, preferably the left-hand one, and carrying at its upper end an antifriction roller 76 which bears against the face of a cam 77 secured to the rock shaft 56. This lever is constantly pressed against said cam by a spring 7 8 connecting its lower arm with the stationary part of the main frame, The downward movement of the transfer arms *2 is effected by a trip pin or stud 79 carried by the sprocket wheel and arranged engage an arm 80 fixed to the reel: shaft 56, once during each rotation of said. sprocket wheel, the downward movement of this rock arm being limited by a suitable stop 81, as shown in 3.

A pin which takes part in the upward movement of the transfer arms and which is preferably carried by the hub of the cam T7 is arranged to engage the tail of the latch 53 during the final upward movement of said arms, so as to swing the long front arm J c 1 1 or the latch downward and withdraw it from the retaining lever 58, as shown in Figs 4, thereby releasing said lever and'peri mitting the roll carrier, to turn. When the transfer arms are lowered, the pin 82 recedes from the tail of said latch, allowing the latter to be swung upward to its looking position by its spring 65, as shown in Fig. 5,

The take-up roll and the music rolls may be driven by any suit-able unwinding and rewinding mechanism, but I prefer to use the mechanism shown in the drawings which is constructed as follows: 83 indicates a spur gear secured to the shaft of the take up roll and adapted to be engaged by a laterally-sliding pinion 84 splined upon the shaft 26 which carries the friction disk 25,

so that when said pinion is shifted into engagement with said spur gear the take-up roll is driven in the proper direction to unwind the music sheet from the active music roll.

85 is a horizontal rewinding shaft arranged parallel with the friction-disk shaft :26 and located endwise opposite the circular path in-which the clutch members of the music rolls travel by the rotation of the rollcarrier. Upon this rewinding shaft is. splined a clutch member 86 with which the corresponding clutch members of the music rolls are adapted to be engaged successively for rewinding the music sheet thereon. Said rewinding shaft is driven from the shaft 26 by gear wheels 87, 88 mounted on said shafts, and an intermediate idler 89 whereby the rcwinding shaft is rotated in the opposite direction to the take-41p roll. The splined clutch member and splined pinion 84: are

'll-dil spring 96 connecting a pin 97 of the shipper connected with opposite arms of a shifting frame 90 pivoted between its ends to brackets 91 extending inwardly from the adjacent end-piece 1. The pivot of said frame is arranged at right angles to the axis of the roll carrier so that the frame rocks lengthwise of the latter. A spring 92 connecting the upper end of this shifting frame with a bracket 98, tends to rock the frame into the position in which the pinion 84 engages the gear wheel 83 of the take-up roll and the clutch member of the rewinding shaft clears the opposing clutch member of the roll carrier. The frame is rocked in the opposite direction for throwing the take-up roll out of gear and the active music roll into gear with the driving mechanism by means of a sliding shipper bar 94; guided horizontally in the right-hand end-piece 1 and connected at its inner end with a stud 95 projecting laterally from the lower arm of said frame. For the purpose hereinafter described, a yieldable connection is pref erably employed between said frame and the ship-per bar. llhe connection shown in the drawings, Figs. 8, 9 and 10, consists of a bar with a rigid arm. 98 on the frame, the inner end of the shipper bar having a fork or longitudinal slot 99 which. permits it to move lengthwise on the stud of said frame. Ordinarily this connection is practically rigid, the spring 96 being made stiff enough for that purpose, but in case the clutch memher of vthe rewinding shaft 85 should not engage properly with an opposing clutch member of the roll-carrier, said spring will yield and prevent breakage of any parts.

The shipper bar is designed to be actuated immediately after a roll has been played, so as to rewind the sheet upon the spool of the played roll. Any suitable-means may be employed for this purpose, but 1 prefer to employ mechanism including a pneumatic controlled by a perforation in the music sheet. In the preferred mechanism shown in the drawings, 100 lndicates a vertically swinging levcr pivoted at 101 to a block 102, and 102-5 indicates a rod connecting the angular portion of said lever with an upright lever 10%. The latter is pivoted at its lower end to a bracket 105, and at its upper end to the shipper bar, whereby when the long arm of the lever 100 is depressed, the shipper bar is pulled outwardly, throwing the take-up roll out of gear and the active music roll into gear with the driving mechanism. Pivoted to said long arm is a trip or thrust-bar 106, the upper end of which is laterally movable into and out of the path of a rotary cam 107 fixed to the power shaft 16. A spring 108 which connects the thrust-bar with the lever 100 tends to draw the bar out of range of the cam 107, while a pneumatic 109, when collapsed, swings the upper end of the bar under the face of said cam, so as to be depressed thereby. For this purpose the movable board of said pneumatic has an arm 110 which bears against the rear-edge of the thrust bar. The operation of this pneumatic Y is controlled by a rewind perforation located in each music sheet near its rear end, and cooperating with a corresponding duct of the tracker board, the pneumatic being inflated when the rewind perforation registers with the corresponding tracker duct and deiiated when it breaks register therewith, in a manner common to pneumatic actions.

Theshipper bar 94 is locked in rewinding position by a vertically-swinging latch 111 pivoted at 112 to the right-hand end piece 1 and'engaging a notch 113 in said bar, the latch being constantly urged toward the latter by a spring 114. The withdrawal of this latch for releasing the shipper bar is controlled by the upward orret'urn movement of the transfer arms through the'rock shaft 56 carrying said arms, an arm 115 fixed to said shaft and a rod or link 116 connecting said arm 115 with the tail of the latch; This link is pivoted to the'arm 115 to movepositively therewith but has a limited amount of lay or dead movement relative to the tail I of the latch, so the the latter is allowed to remain in locking position during the greater part of the upward stroke of the transferarms but withdrawn during the final portion of saidstroke b the engagement'of a head or shoulder 11 on said link against the rear side of said latch-tail, as shownin Fig. 8. The moment this latch is withdrawn, the shipper bar 94 and the rocking frame are released, permitting the latter to be swung by its spring 92 in the proper direction todisengage therewound music roll from the rewind shaft 85. To prevent this-rocking frame from swinging far enough to againlengage' the pinion 84: with the gear wheel 83 of the take-up roll, the shipper bar is provided with a rearwardly-extending pin 118 which engages the outer side of a stop-arm or, segment 119 secured to the rock shaft 56 which carries the transfer arms 72. This segment is of the proper length to block said shipper-bar in the elevated position of the transfer arms, as shown in Fig. 8, but to clear and release said pin in the depressed position of said arms, in order to allow tl1e'shipper-bar to advance sufficiently to throw the take-up roll into gear with'the driving mechanism after said arms have been lowered to transfer the rod 68 of the active music roll to the hooks of the take-up roll, as hereinbefore described. In this last-mentioned position of the shipper bar, which is illustrated in Fig. 9, its pin 118 extends immediately over the nose or straight front edge 120 of said stopsegment and thus blocks the upward movei io s ment of the segment and consequentlyretains the transfer arms in their depressed position until said pin is again withdrawn ing latch 1-21 preferably pivoted upon the lower rear tie rod 2 and engaging a notch 122 in the adjacent flange of said roller.

This latch is connected with one of the takeup arms by a link 123 in such manner that the latch is held in engagement with the take-up roll in the elevated position of the transfer arms and is swu-ngjdown out of engagement therewith when said arms are lowered, in order "to release the take-up roll by the time it receives the rod of the music roll from said'arms. I

The wind chest of the automatic musical instrument with which the roll carrier is associated may be flushed by any suitable :means, in order to silence the instrument during the rewinding of the music sheets. 1 I

preferably employ a flushing device conthe roll changer and constructed as follows:

The block 102 contains a flushing port or passage 12a suitably connected with the wind chest and controlled by a flushing valve 125 carried by a lever 126 pivoted to a standard 127 on said block 102, as shown in Fig. 11. T he shifting lever 100 carries a laterally-projecting pin 128 which extends over the tail or short arm of the valve-lever 126., so that when the lever is depressed by the thrust-bar 106, its pin 128 depresses the rear arm of the valve-lever, raising the front arm of the latter and opening the valve, thus flushing the wind chest during the rewinding operation. lhe lever 126 is temporarily locked in this position by a spring catch 129 engaging a pin 126 on said lever. The release of this catch is preferably controlled from the shaft of the take-up roll through a horizontal rock shaft 130 arranged below the latter and provided at its outer end with an arm 131 adapted to bear upon the tail of said catch 12 9 and at its inner end with a similar arm 132 adapted to be depressed by a trip pin 133 carried by the gear wheel 83 on the shaft of the, take-up roll.

In practice, the air is exhausted from the wind chest of the musical instrument, as soon as the roll changer is actuated, and unless the music sheet tightly closes the ducts of the tracker-board while its end is being transferred to the take-up roll, the instrument will play numerous discordant notes during this interval. As it is difiicult to reliably close the ducts during this transferring operation, the apparatus is preferably so organized that the finishing valve is held open during that interval and for a short period thereafter. For this purpose the trip-pin 133 of the gear wheel 83 is so arranged that it does not actuate the rock-shaft 130 until a sufiicient portion of the sheet has been wound on the take-up roll to cause it to hug the tracker board and close all its ducts preparatory to playing the selections on the sheet in the usual :manner. Satisfactory results are obtained by arranging said pin to trip the rock shaft and allow the flushing valve to close, after the take-up roll has made nearly a complete turn.

The operation of the apparatus is as follows: Preparatory to starting-the apparatus, the desired music rolls are placed-in the carrier. in the normalinactive position of the forward rotation of the roll-carrier. At the same timethe leaf-spring 54 is relaxed, allowing the. spiral spring 57 to draw the movable clutchmember into engagement with the corresponding clutch-member of the sprocket wheel 43, which latter forms part of the rotatingmechanism of the roll carrier,

'thus throwing this mechanism into gear with the main driving shaft. The lockingtime held out of engagement with saidlever by :the'pin 82, as shown in Fig. 4. The

operator new sets the roll carrier by hand to play the desired music roll, and then closes-the motor circuit by the deposit of a coin or otherwise. The shaft 33 and the shaft of the roll unwinding and rewinding mechanism are thereby constantly'rotated. The roll carrier is first automatically turned forward a step to bring a roll into playing position by the rotation of the sprocket wheel 11 whose pin iO enters and leaves one of the radial slots of the wheel 38, giving the latter and the carrier a partial turn, the spring-pressed retaining lever yielding and permitting this=action because it has not yet been'locked by its latch -63.

By the continued rotation of said sprocket wheel, its trip pin 79 engages the actuating arm 80 of the rock shaft 56,-turning said shaft in the proper direction to lower the transfer arms 72, which now withdraw the rod 68 of the active music roll from the notches of the carrier and deliver it to the hooks of the take-up roll. By this rocking movement of the shaft 56, the locking latch 63 is released and allowed to rise into en'- gagement with the retaining lever of the roll carrier; the locking latch 121 of the ttike up latch of the retaining lever 58 is at the same rollis withdrawn; and the leaf-spring'fi t is tensioned by the cam 55, so that by the continued rotation of the sprocket wheelie-1, the nose of the controlling lever enters the notch oi -said wheel, allowing the upper end of said lever to swing farther inward and rockingthe clutch lever l6 in the proper direction to disengage the clutch members 4: 1;, 15 thereby permitting said sprocket wheel to remainzat rest, as hereinbefore described. The forward rotation: of saidrock shaft 56 also causes the withdrawal of its segment 119 from the stop-pin 118 of the shipper bar 942, as shown in Fig. 9, thus releasing the rocking frame 90 and allowing its spring 92 to swing it into proper position to throw the pinion 8 1 into gear with the take-up roll, as shown in Fig. 9. The take-up roll is now rotated in the proper direction to unwind the music sheet from the active music roll, and after nearly a com- 'pleteturn of the take-up roll the trip-pin 133 depresses the arm 132 of the rock shaft 130-,thereby releasing the locking catch 129 of the flushing valve 125 and allowing the latter to close, placing the wind chest under tension and causing the instrument to play automatically in the customaryxmanner;

When the music roll has been nearly unwound, its rewind perforation, hereinbefore referred to, registers with thecorresponding duct of the tracker-board, causing the collapse. of the shipper pneumatic 109 whichi now shifts the thrust bar 106'into en age ment'with the cam 107 which latter t me.

upon moves'the shipper bar 92 through the connections hereinbefore described, in the proper direction to reverse the position of therockin'g frame 90,, thus throwing the played music roll into gear with the rewind shaft'and the take-up roll out of'gear with its drivingpinion 84. The shipper-bar is locked-in thispositionby' the latch 111. The

music sheet is now rewound upon said music roll and upon being fully 'unwound from the take-up roll, it's notches 73 of the depressed transfer arms and elevates the latter, the final-portion of the. upward stroke ofthese arm's being cf fected by the-spring-pressed lever-7 5 engaging-the cam?! ofthe rock shaft which carries.- said arms,:. as hereinbefore described. the upward *mOVQ-i mentof these arms the latch-controlling link .ut

During the, first part of 116- slides idly on the tail of thelatch, durin the. final portion of said stroke,- the shoul en'117 of said link abuts against said tail and swings the latch outof engagement E with the shipper-bar 9a. The latter being now released, the spring .96 urges-therocking 'frame 90'towardzits former position, but before the frame swings far-enough to again throw the'pinion 84 into gear with-the riving wheel 83 of the take-up roll, the stop pin 118 of the shipper-bar encounters the stop transfer arms,

end bar 68 engages the n art of. my pres t. a s pe. of parts of the mechanism ma segment 119 which has in. the meantime been moved in front of it by the return movement of the rock shaft 56, thereby locking said rocking frame in its vertical or neutral position, in which both the take-up roll and the rewound music roll are out of gear with the driving mechanism. After leaving the transfer arms, the rod 68 of the rewound music roll reenter-s the notches 7 0 of the rollcarrier. By the backward rotation of the rock shaft 56 roduced by the upward stroke of the trans 'erarms, the cam 55 is withdrawn from the leaf spring 5 1, removing the tension from the lever 50 whose upper end is now retracted from the notch of the sprocket wheel -41 by the spiral spring 57, thereby withdrawing the slotted link 19 from the upper arm of the clutch lever and allowing the spring 48 of the latter to shift the clutch member 45 carried by said lever into engagementwiththe corresponding clutch member The actuating mechanism of the rollcarrier is thereby-again thrown into-gear w1th the main driving-shaft,

preparatory to advancing the carrier another step and bringing .:the nextmusic roll into playing position by the deposit of another coin,

whereupon the above described cycle of op erations is repeated.

. The positive locking devices 58 and 63 of the roll-carrier and the sheet-transferring devices which control the same are so constructed and arranged that the carrier is locked inposition beforethe pin 40 of the actuating wheel dlleaves the active slot of the wheel 88. This prevents the carrier, after havingbeen properly advanced, from being disturbed or moved out. of position by persons tampering with the apparatus;

'- The spring pressed lever 75 and cam 77 by completing the upward strokebf .the serve to-raise them farenough to clear the. music-roll rods. seated in the notches of. the roll-carrier- The. transfer arms are thus prevented from pushing said rodsout otsaid' notches when the roll carrier-is rotated, which would otherwise occur.

Any suitable coin-controlled device may be' employed for automatically starting the .apparatus and stopping it after the playing of: each music r011. This mechanism forms 'ent inventions-and therefore is not illustrated.

Various ahanges or modifications of the a paratuszgmay obviously be made within the appended claims, and some be used independently of others, and I 0 not therefore wish to be-limitedto'the particular construction ofthe apparatus herein shown and described;

I claim as my invention:

1. Thecombination of a traveling carrier adapted to carry a plurality of music rolls,

a take-up roll, means for alternately driving the takcup roll and one of the music rolls, and automatic means for intermittently advancing said carrier to bring different music rolls in operative relation to the take-up roll.

2. The combination of a rotatable carrier adapted to carry a plurality of'music rolls, a take-up roll, means for alternately driving the take-up roll and one of the music-rolls, and automatic means for intermittently rotating said carrier.

3. The combination of a rotatable carrier adapted to-carry a plurality of music rolls,

. a take-up roll means for alternately driving the take-up roll and one of the music-rolls, automatic means for intermittently rotating the roll carrier, and means for .locking the carrier in position after each movement thereof.

t. The combination of a rotatable carrier adapted to carry a plurality of musicrolls, a take-up roll, means for alternately driving the take-up roll and one of the music-rolls,

transfer means for delivering the ends of the music sheets to the take-up roll, means for intermittently rotating the roll-carrier, and locking means for the carrier controlled by said transfer means.

5. The combination of a rotatable carrier adapted to carry a plurality of music rolls, a take-up roll, means for alternately driving the take up roll and one of the music-rolls, means for intermittently rotating the rollcarrier, locking means for the carrier, and transfer means for delivering the ends of the music sheets to the take-up roll, said transfer means controlling said locking means and operating to release the same on the return stroke of the transfer means.

6. The combination of a rotatable carrier adapted to carry a plurality of music rolls, a take-up roll, means for alternately driving the take-up roll and one of the music-rolls,

means for holding said driving means out of engagement with the take-up roll and the music-rolls. and transfer means for delivering the ends of the music sheets to the takeup roll said transfer means controlling said holding means.

7. The combination of a rotatable carrier adapted to carry a plurality of music rolls, a take-up roll, means for alternately driving the take-up roll and one of the music-rolls,

means for holding said driving means out of engagement with the take-up roll and the 'music rolls, means for intermittently rotating said carrier, means for locking the carrier, and transfer means fordelivcring the ends of the music sheets to tho take-up roll, said transfer means controlling both said locking means and said holding means.

8. The con'ibinatiou of a rotatable rollcarrier, adapted to carrv a plurality of music rolls, a taltc-up roll transfer means for delivering the ends of the music sheets to the take-up roll, driving mechanism means for intermittently rotating the roll carrier, and means for throwing said carrier rotating means into and out of gear with said driving mechanism.

9. The combination of a rotatable rollcarricn adapted to carry a plurality of music rolls a take-up roll, transfer means for delivering the ends of the music sheets to the take-up roll, driving mechanism means for intermittently rotating the rollcarrier, and means controlled by said trans fer means for throwing said carrier-rotating means into and out of gear with said driving mechanism.

10. The combination of a rotatable rollcarrier, adapted to carry a plurality of music rolls; a take-up roll. transfer means for delivering the ends of the music sheets to the takeup roll, driving mechanism means for intermittently rotating the rollcarrier, and a clutch under the control of said transfer means connecting saidcarrier rotating means with said driving mechanism.

11. The combination of a rotatable musicroll carrier. a radially-slotted wheel mounted on the shaft of said carrier, an actuating wheel having a pin" arranged to engage the slots of said wheel successively, a take-up roll, means for transferring the ends of the music-sheets to the take-up roll. driving mechanism. and means controlled by said t 'ansfer means for throwing said actuating wheel into and out of engagement with said driving mechanism.

12. The combination of a rotatable musici'ollcarrier, a take-up roll, transfer means for delivering the ends of the music sheets to the taireup roll, means for intermittently actuating said transfer means, driving mechanism, and means for throwing said actuating means into and out of engagement with said driving mechanism.

13. The combination of a music-roll carrier, a take-up roll, a rock shaft carrying a transfer arm arranged to deliver the ends of the music sheets to the take-up roll, said shaft also having a rock arm, a rotary actuating member having a trip pin arranged to engage said roclcarm, and means for driving said actuating member.

1%. The combination of a music-roll carrier, a take-up roll, a rock shaft carrying a transfer arm arranged to deliver the ends of the music sheets to the take-up roll., said shaft also having a rock arm, a rotary actuating member having a trip pin arranged to engage said rock-arm. driving mechanism, and means controlled by said rock shaft for throwing said actuatim member into and out of engagement with said driving mechw nism.

15. The combination of a music-roll carrier take-up roll, a rocltshaft carrying a transfer arm arranged to deliver the ends of into and out. of engagement with said driving mechanism.

16. The combination of a rotatable musicroll carrier, a radially-slotted wheel mounted on the shaft of said carrier, a take-up roll, a rock shaft carrying a transfer arm arranged to deliver the ends of the musicsheets to the take-up roll, said shaft also having a rock arm, an actuating wheel having a pin arranged to engage the slots of said wheel successively, and a second pin arranged to engage said rock-arm, and means for driving said actuating wheel.

17. The combination of a rotatable music roll carrier, a radially-slotted wheel mounted on the shaft of said carrier, a take-up roll, a rock shaft carrying a transfer arm arranged to deliver the ends of the music-' sheets to the take-up roll, said shaft also having a roclearm, an actuating wheel having a pin arranged'to engage the slots of said wheel successively and a second pin arranged to engage said rock-arm, driving mechanism, and a clutch controlled by the movement of said rock shaft for connecting said actuating wheel with said driving mechanism.

18. The combination of a rotatable music roll carrier, an actuating wheel for said carrier having a'recess, driving mechanism, a clutch for connecting said actuating wheel with said, driving mechanism," a controlling lever for said clutch normally bearing against said actuating wheel and adapted to engage the recess thereof to change the position of the lever and the clutch.

19. The combination of a rotatable musicroll carrier, an actuating wheel for said carrier having a recess, driving mechanism, a clutch for connecting said actuating wheel with said driving mechanism, a controlling lever for said clutch normally bearing against said actuating wheel and adapted to engage the recess thereof to change the position of the lever and the clutch, means for pressing said lever against said wheel, and means for withdrawing said lever from said recess when the lever is released from said pressing means.

20. The combination of a rotatable musicroll carrier, an actuating wheel for said carrier having a recess, driving mechanism, a clutch for connecting said actuating wheel with said driving mechanism, a controlling lever for said clutch normally bearing against said actuating wheel and adapted to engage the recess thereof, a spring tending to press said lever against said wheel, means for tensioning and relaxing said spring, and

i a second spring tending to withdraw said leverfrom said recess when the first-named spring is relaxed.

'21. The combination of a rotatable musicroll carrier, an actuating wheel for said carrier having a recess, driving mechanism, a clutch for connecting said actuating wheel with said driving mechanism, a controlling lever for said clutch normally bearing against said wheel and adapted to enter the recess thereof, a take-up roll, a rock-shaft carrying a transfer arm arranged to deliver the ends of the music sheets to the take-up roll, said shaft also carrying a member arranged to press said lever against said wheel in the lowered position of the transfer arm and to release the lever in the raised position of said arm, and a spring for withdrawing said lever from said recess when released by said pressure member.

22. The combination of a rotatable musicroll carrier, an actuating wheel for said carrier having a recess, driving mechanism, a

clutch for connecting said actuating wheel with said driving mechanism, a controlling lever for said clutch normally bearing against said actuating wheel and adapted to engage the recess thereof, said lever having a spring which when tensioned'presses the lever against said wheel, a take-up roll, a rock shaft carrying a transfer arm for delivering the ends of the music sheets to the take-up roll and a cam arranged to tension said lever spring when the transfer arm descends and to recede from said spring when the transfer arm ascends, and a secon spring tending to withdraw said lever from said recess.

25. The combination of a rotatable musicroll carrier, an actuating wheel for said carrier having a recess, driving'mec'hanism, a'clutch for connecting aid actuating wheel with said driving mechanism, a shifting lever for said clutch, a spring for swinging said lever in one direction, a controlling lever normally bearing against said actuating wheel and adapted to engage the recess thereof, a bar attached to said controlling lever and engaging said clutch lever to swing the same in the opposite direction, a second spring acting on said controlling lever to press the same against said actuating wheel when tensioned, a rock shaft carrying a cam bearing against the lastnamed spring, means for actuating said shaft, and a third spring tending to withdraw said controlling lever from said recess.

24. The combination of a rotatable music roll carrier, a notched wheel secured to the shaft of the carrier, a lever interlocking with said wheel, and locking means for aid lever.

25. The combination of a rotatable music roll carrier, a wheel secured to the shaft of the carrier and having V-shaped notches, a spring-pressed lever engaging said notches, and locking means for said lever.-

arm, and means for effecting the return stroke of said shaft.

roll carrier, a take-up roll, means for alter- 26. The combination of arotatable musicroll carrier, a take-up roll, transfer means for delivering the ends of the music sheets to the take-up roll, and locking means for said carrier controlled by said transfer means.

27 The combination of a rotatable musicroll carrier, a locking device for said carrier, a spring tending to move said locking device'in one direction, a rock shaft, and a member on said rock shaft engaging said locking device to move the same in the op-" posite direction.

28. The combination of a rotatable musicroll carrier, a retaining lever for the carrier, a locking latch for said lever, a spring tending to hold the latch in engagement with said lever, and a rock shaft carrying a projection arranged to move the latch out of engagement with the lever.

29. The-combination pf a rotatable musicroll carrier, a notched Wheel secured to its shaft,.a retaining lever engaging said Wheel, a locking latch for said lever,a spring tending to hold the latch in looking position, a takeup roll, and a rock shaft carrying a transfer arm for delivering the ends of the music sheets to the take-up roll and a projection arranged to engage said latch for withdrawing the same from aid lever.

30. The combination of a rotatable musicroll carrier, a take-up roll, means for alternately driving said take-up roll and one of the music-rolls,means for holding the driving mechanism in position to rewind the music sheet on the active music roll, a rock shaft carrying a transfer arm for delivering the'ends of the music sheets to the take-up roll, a connection between said rock shaft and said holding means for releasing the latter on the return stroke of the transfer 31. The combination of a rotatable musicroll carrier, :1. take-up roll, means for alternately driving said take-up roll and one of the music rolls, means for holding the drivingmechanism in position to rewind the music sheet on the active music roll, a rock shaftcarrying a transfer arm for delivering the ends ofthemusic sheets to the take-up roll, a connection-between said rock shaft and said holding means for releasing the latter on the return stroke of .the transfer arm, and spring-pressed means acting on said shaft to effect the final portion of its re: turn stroke.

32. The combination of a rotatable music nately driving said take-up roll and one of the music rolls, means for holding the driving mechanism in position to rewind the music sheet on the active music-roll, a rock shaft carrying acam and a transfer arm for delivering the ends of the'music sheets to the take-up roll, a connection between said rock said lockin shaft and said holding means for releasing the latter on the return stroke of the transfer arm, and a spring-pressed lever bearing against said cam. w

33. The combination of a rotatable music roll carrier, a take-up roll, mechanism for alternately driving said take-up roll and one ofthe music rolls, a shipper bar for moving sa d drlving mechanism into position to rewlnd the music sheet on the active music roll, a locking latch forsaid shipper bar, a rock shaft carrying a rock arm and a transfer arm for delivering the ends of the music sheets to the take-up roll, and a rod connectmg said locking latch with said rock arm.

34. The combination of a rotatable music roll carrier, a take-up roll, mechanism for alternately driving said take-up roll and one ofthe music rolls, a shipper bar moving said driving mechanism into position to rewind the music sheet on the active music roll, a locking lat-ch for said shipper bar, a rock shaft carrying a rockarm and a transfer arm for delivering the ends of the music sheets to the take-up roll, a rod connecting latch with said rock arm and movable in ependently of said latch during. a portionof the return stroke of said rock shaft.

35. The combination of a rotatable music roll carrier, a take-up roll, mechanism for alternately driving said take-up roll and one of the music rolls a shipper bar for moving said driving mechanism into positionto rewind the music sheet on the active music roll, a locking latch for said shipper bar, a rock shaft carryinga rock arm and a transfer arm for delivering the end of the music sheets to the take-up roll, a rod connecting said locking latch with said rock arm and movable independently of said latch during the initial portion of the. return stroke of said rook shaft, a cam secured to said shaft, and a spring-pressed lever bear- 1ng against said cam for effecting the .final portion of saidreturn stroke.

36. The combination of a rotatable musicroll carrier, a take-up roll, a transfer means for delivering the endsof the music sheets to thetake-up roll, and locking means, for the take-up roll controlled by saidtransfer means.

37. The combination of a rotatable music roll carrier, a take-up r011, mechanism for alternately driving the take-up roll and one of the music rolls, a shipper bar controlling the position f said drivin mechanism, a rock shaft carryin a,,trans%er "arm for delivering the ends 0 the music sheets to the take-up roll, and a stop-member on said rock shaft'arranged to limit the movement of the shipper bar in one position of said transfer arm and to clear and release said bar in another position of the transfer arm.

38. The combination of a rotatable musicroll carrier, a take-up roll, mechanism for alternately driving the take-up roll and one of the music rolls, a shipper bar controlling the position of said .driving mechanism and having a projection, a rock shaft carrying a transfer arm for delivering the ends of the music sheets to the take-up roll, and a stop segment secured to said rock shaft and constructed to engage said projection in the elevated position of said arm.

39. The combination of a rotatable musicroll carrier, a take-up roll having a locking notch, a rocking transfer arm for delivering the ends of the music sheets to the take-up roll, a locking latch arranged to engage said notch, and means connecting said latch with said transfer arm.

40. The combination of a music-roll carrier, a take-up roll, a flushing valve, means for transferring the ends of the music sheets to the take-up roll, means for holding said flushing valve open during said transferring operation, and automatic means for closing said valve after said transferring operation.

41. The combination of a music-roll carrier, a take-up roll, a flushing valve, means for transferring the ends of the music sheets to the take-up roll, means for holding said flushing valve open during said transferring operation, and means controlled by the rotation of the take-up roll for closing said valve.

42. The combination of a music-roll carrier, a take-up roll, a flushing valve, a catch for holding said valve open, a rock shaft having a trip arm and an arm arranged to engage and release said catch, and a trip member carried by the shaft of the take-up roll and arranged to engage said trip-arm.

43. The combination of a rotatable music roll carrier, a take-up roll, mechanism for alternately driving said take-up roll and one of the music rolls, a shipper bar for moving said driving mechanism into position to rewind the music sheet on the active music roll, lockingmeans for said shipper bar, and means for transferring the ends of the music sheets to the take-up roll, said transferring means controlling said locking means.

44. The combination of a rotatable music roll carrier, a take-up roll, mechanism for said transfer arm and to clear the same in the depressed position of alternately driving the take-up roll and one of the music rolls, a shipper bar controlling said driving mechanism, a rock shaft carrying a transfer arm for delivering the ends of the music sheets to the take-up roll, and a stop-member on said rock shaft arranged to engage a part of said shipper bar to lock said transfer arm in its depressed position.

45. The combination of a rotatable music ,roll carrier, a take-up roll, mechanism for alternately driving the take-up roll and one of the music rolls, a shipper bar controlling said driving mechanism and having a projection, a rock shaft carrying a music-sheet transfer-arm, and a stop-segment secured to said rock shaft and constructed to engage said projection in the elevated position of said transfer-"arm and clear the same in the depressed position of said arm, said seg-.

ment having a part arranged to engage under said projection in the take-up position of said driving mechanism, to lock said transfer-arm in its lowered position $6. The combination of a traveling music roll carrier, a radially-slottedwheel mounted on the shaft of said carrier, an actuating wheel having a pin arranged to engage the slots of said wheel successively, means for intermittently driving said actuating Wheel,

locking means for the roll-carrier, and automatic means arranged to move said locking means into position to lock the carrier before said pin moves out of engagement with said slotted Wheel.

4:7. The combination of a traveling music roll carrier, a radially-slotted wheel mounted on the shaft of said carrier, an actuating wheel having a pin arranged to engage the slots of said wheel successively, means for intermittently driving said actuating wheel, locking means for the roll-carrier, a take-up roll, and means for transferring the ends of the music-sheets to the take-up roll, said transferring means controlling said locking means to lock the carrier before said pin moves out of engagement with said slotted wheel.

lVitness my hand this 17th day of September, 1912.

FRANK L. MoQORMICK. Witnesses O. F. GEYER,

E. M. GRAHAM.

Corrections in Letters Patent No. 1,1 10,001.

It is hereby certified that in Letters Patent No. 10110.,001, granted September 8,

19M, uponthe application of Frank L. McCormick, of North Tonawanda, New York, for an improvement in Automatic Roll-Changers for Musical Instruments,

errors appear in the printed specification requiring correction as follows: Page :t,

line 116 after the com ound word shi er-har-insert the word in; a e 5.

, P PP P P g 1 line 66, for the word fiuishing read flushing; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Ofiice.

Signed and sealed this 13th day of October, A. D., 1914.

[SEAL] J. '1. NEWTON,

Acting Uommissz'onm' of Patents. 

